I tried it with the argument. But it doesn´t work for me. This is how i tried it:
"C:\Program Files (x86)\Opera\launcher.exe" --disable-usb-keyboard-detect
Could it be that it only works with opera 32 bit?
I have tried opera 38, 39.0.2256.48 and the newest beta-version. But it doesn´t work.
Have anyone an idea?
Thank you very much